Here are the Steps to Making a Cabochon
This stone was done last year, but we are still working on more!
Back to the Grinding Room
Pick out a nice slab.  This is a piece of Labradorite I bought at one of the local shows.
Select a shape from the template and pick out a good spot.  I use a pointed brass rod to mark the shape.
This is the resulting shape on the stone slab.  There may even be enough left over for a second stone.
Using the diamond bladed trim saw cut reasonably close to the line.  Try for less than a sixteenth of an inch to minimize grinding.  This stone tended to fracture so I stayed a little farther away.
Here is the rough trimmed stone.  Again, we stayed away from the edge because of a tendency to fracture.
Moving to the Genie grinder - Start at the coarsest wheel and start grinding down to the line.  Try to keep the edge as square as possible to the face.  Leave room to the edge since the scribe does not get right to the edge of the template.
Clean the stone and mount it to a dop stick using dop wax.  Try to keep it as centered as possible, and square to the stone face.
By grinding a series of angled faces around the stone we begin to get the shape we want.
Moving progressively from the coarsest wheel to the the finest (14000 grit) all the flat spots and ridges are removed.  The stone is ready to polish.  A lot of attention is given to making sure there are no flat spots or scratches from previous steps.

Here are some shots of the finished stone.  I really like the cobalt blue sheen that moves around the stone when it is viewed from different positions.  I'm not as thrilled about the flaw in the stone, but hey I knew it was there when I started.